Side frame for car-trucks.



J. H. BAKER. SIDE FRAME FOB OAR TRUCKS. APPLICATION FILED BEIT. 8, 1908.

919,677. Patented Apr, 27, 1909.

2 BHEETSw-SEEET 1.

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J. H. BAKER. SIDE FRAME POE GAR TRUCKS.

APPLICATION IILED SEPT. 8, 190B.

Patented Apr. 27, 1909.

2 SHEETS-SHEET 2.

" WITNESSES UNITE JAMES H. BAKER, OF PITTSBURG, PENhlSYLVANlr-L SIDEFRAIVIE FDR CAR-TRUCKS.

To all whom it mayconcern:

Be it known that I, Janns ll. BAKER, of Pittsburg, Allegheny county,Pennsylvania, haveinvented a new and useful improvement in Side Framesfor Can-Trucks, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingpart of this specification, in which- Figure 1 is a side elevationpartly in section; Fig. 2 is a horizontal section on the irregular linelI-Il of 1 l 3 is a vertical cross section on the line 111 Ill of Fig. lFig. l is a side elevation similar to Fig. 1 showing a modification;Fig. 5 is a horizon tal section on the irregular line '-Y of Fig. 4 andFi 6 is a vertical cross section on the line VI I of l.

My invention has relation to side frames for car trucks, and is designedto provide a simple and strong frame which can be readily and cheaplymanufactured, the main or compression member of the frame including thecolumns being formed by a steel casting, and the tension member beingseparately formed of wrought or cast metal.

The precise nature of my invention will be best understood by referenceto the accompanying drawings, which will now be described, it beingpremised, however, that various changes may be made in the details ofconstruction by those skilled in the art without departing from myinvention as defined in the appended claims.

Referring to these drawings, the numeral 2 designates the main orcompression member of the side frame, which in accorda. co with myinvention is, together with the bolster guides or columns 3, formed inan integral steel casting the end portions of said member being extendedas shown at 4 and provided with under surfaces 5 forming seats to whichare secured the end portions of the bent tension member 6, which ispreferably of Wrought metal. The end portions 7 of the tension memberare secured to the portions 4 of the compression member by one or morerivets 8, and the central portion of the tension member is secured tothe lower ends of the columns 3, either by the rivets 9, as shown inFigs. 2 and 8 or by the bolts 10, as shown in Fig. 4. The lower ends ofthe columns 3 are formed with the seats 12 to receive the tension memberand prevent any lateral movement thereof, thus relieving the rivets 9 orbolts 10 of lateral shearing strains.

Specification 01" Letters Patent.

Application filed September 8, 1908.

Patented Apr-i127, 1909.

Serial No. 451,977.

The columns are formed with the slots or opcnir 13, extendingtheretlu-migh, and into h the bolts 2) or rivets 10 can be inserted.

l-l designates the usual tie bar. ihere rivets E) are employed forsecuring the tension members to the columns these tie bars are providedwith the seats in for the rivet heads, and where the bolts 10 areennoloyed, these bolts preferably extend through the tie 16 designatesthe journal box bolts, which extend downwardly through the connected endportions of the tension and compression members of the frame. By theprovision of the rivets S, which are preferably seated before the holesfor the journal box bolts are formed, the bolt holes in the tension andcompression members for these bolts can be formed in accurate alincmentso that there will be no initial lost motion on the bolts 16, and thesebolts can be made to have practically a driving lit with the bolt holes.

The advantages of my invention will be apparent to those skilled in theart, since it provides a strong and rigid truck frame which can bereadily and cheaply manufactured. The compression members and columns,in the form shown, can be readily cast in one integral piece, and thetension member made of a separate piece and readily secured thereto.This form 'ives all the flexibility of the well known standard wroughtdiamond side frame with less weight, and the advantage over it of beingshipped and attached to the other parts of the truck as a unit.

I do not wish to limit my self to the precise form of the compressionmember shown, since this may be cast in any suitable form to give amaximum amount of metal, and the tension member may be secured theretoin various ways.

I claim 1. A side frame for car trucks, comprising a cast metalcompression member having bolster guides or columns cast integraltherewith, and a separate tension member secured at its ends to thecompression member and at its central portion to the said guides orcolumns; substantially as described.

2. A side frame for car trucks, having a cast compression member formedat its end portions with seats and securing means for the end portionsof a separate tension member, and having integral bolster guides orcolumns, said guides or columns having means at their lower ends forseating and securing the tension member substantially as described.

3. A side frame for car trucks, consisting of a cast compression memberhaving integral bolster guides or columns, formed with seats at theirlower ends for a tension member, and With slots or openings throughWhich fastening means for the tension mem ber can be inserted;substantially as described.

4. A side frame for car trucks, consisting of a compression memberhaving straight end portions, integral bolster guides or columns, and aseparate tension member having straight end portions fitted and securedto the straight end portions of the compression member, and a centralportion secured to the guides or columns; substantially as described.

5. A side frame for car trucks, consisting of" a cast compression memberhaving integral bolster guides or columns, of a Wrought metal tensionmember having its end portions rigidly secured to the end portions ofthe compression member by means independent of the journal boX bolts,said tension member being also secured at its central portion to thebolster guides or columns; substantially as described.

6. A side frame for car trucks, having a compression member formed withintegral bolster guides or columns, said bolster guides or columnshaving fastening seats at'their lower ends, and slots giving access tosaid seats; substantially as described.

' 7 A side frame for car trucks, having a compression member formed withintergral guides or columns having fastening seats within their lowerends, a tension member,

and fastening means securing the tension member to said guides orcolumns; substantially as described.

In testlmony whereof, I have hereunto set my hand.

JAMES H. BAKER.

Witnesses:

GEO. B. BLEMING, GEO. H. PARMELEE.

